14k^2-63=-21k

Solution for 14k^2-63=-21k equation:

Simplifying
14k2 + -63 = -21k

Reorder the terms:
-63 + 14k2 = -21k

Solving
-63 + 14k2 = -21k

Solving for variable 'k'.

Reorder the terms:
-63 + 21k + 14k2 = -21k + 21k

Combine like terms: -21k + 21k = 0
-63 + 21k + 14k2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(-9 + 3k + 2k2) = 0

Factor a trinomial.
7((-3 + -1k)(3 + -2k)) = 0

Ignore the factor 7.
Subproblem 1
Set the factor '(-3 + -1k)' equal to zero and attempt to solve:

Simplifying
-3 + -1k = 0

Solving
-3 + -1k = 0

Move all terms containing k to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + -1k = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1k = 0 + 3
-1k = 0 + 3

Combine like terms: 0 + 3 = 3
-1k = 3

Divide each side by '-1'.
k = -3

Simplifying
k = -3
Subproblem 2
Set the factor '(3 + -2k)' equal to zero and attempt to solve:

Simplifying
3 + -2k = 0

Solving
3 + -2k = 0

Move all terms containing k to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + -2k = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2k = 0 + -3
-2k = 0 + -3

Combine like terms: 0 + -3 = -3
-2k = -3

Divide each side by '-2'.
k = 1.5

Simplifying
k = 1.5
Solution
k = {-3, 1.5}